Richard Grabman has a new e-book titled Gorostieta and the Cristiada: Mexico’s Catholic Insurgency of 1926-1929, which can be purchased here. I've not had the pleasure of reading the book yet (though I will!), but the Cristiada is a fascinating and all-too-overlooked period in Mexican history, and, based on his writing at Mexfiles, I can only imagine that Grabman's opus is well worth your time.
Also, Mexico's biggest bookseller Gandhi has launched a new e-reader. Hopefully, this will be part of a broader shift toward Mexican books becoming available digitally. Physical books from Mexico are hard to track down in the US, and are shockingly expensive wherever you are.